The 51-year-old injured man is expected to survive but suffered several injuries after being shot in the back and arm more than once, Pleasanton police Sgt. Steven Ayers said. The assailants also hit him with a hockey stick, Ayers said.

The attack happened as the man was sleeping under an overpass at Stoneridge Drive and the Arroyo Mocho Trail. Officers were called around 11:20 p.m., after the injured man tracked down a passer-by on Stoneridge Drive following his escape from the attack. Officers met the victim at the entrance of the Springhouse Apartments at 5505 Springhouse Drive.

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Police searched the area but were unable to find any suspects. They say three people were involved in the attack.

The primary aggressor, Ayers said, was a white man between 18 and 25 years old and about 5 feet, 7 to 5 feet, 8 inches tall. He weighed about 200 pounds and had brown eyes, brown hair and had about three or four days worth of beard stubble, Ayers said.

The other two suspects also were males between 18 and 25 years old, but police did not have any further description details on them. The injured man went by ambulance to Stanford Valley Care Medical Center, where he was treated and released.

Violent police encounters in California last year led to the deaths of 157 people and six officers, the state attorney general’s office said Thursday in a report that provides the first statewide tally on police use-of-force incidents.

A group affiliated with the online activist group known as Anonymous on Thursday posted what it says are the private cellphone numbers and email addresses for 22 Republican members of Congress in a bid to push for President Donald Trump’s impeachment.